#0B4F71
Closest named color: Deep Sea Blue (#015482). oklch(40.6% 0.084 237.5), rgb(11, 79, 113).
Aa
White text reads best on this color (8.85:1).
About this color
#0B4F71 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.084 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.029 away. White text reads best on it, at 8.85:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #0B4F71 |
| RGB | rgb(11, 79, 113) |
| HSL | hsl(200, 82%, 24%) |
| OKLCH | oklch(40.6% 0.084 237.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #0B4F71 | 8.85:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #0B4F71 | 2.37:1 | Fails | Lc 14.1 | Not readable |
| #0B4F71 text on white | 8.85:1 | AAA | Lc 89.9 | Fine for body text |
| #0B4F71 text on black | 2.37:1 | Fails | Lc -12.4 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1EBF2
oklch(93.5% 0.014 238)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A4C6DD
oklch(80.9% 0.049 237.8)
-
Step 400
400
#70A8CC
oklch(70.6% 0.079 237.6)
-
Step 500
500
#4792BF
oklch(63.1% 0.101 237.6)
-
Step 600
600
#227CAB
oklch(55.7% 0.109 237)
-
Step 700
700
#126893
oklch(49.1% 0.102 237.4)
-
Step 800
800 (this color)
#0B4F71
oklch(40.6% 0.084 237.5)
-
Step 900
900
#194660
oklch(37.6% 0.066 237.6)
-
Step 950
950
#102938
oklch(26.9% 0.042 237.4)
#0B4F71 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #3F4F73 | 0.048 |
| Deuteranopia (no green cones) | #314670 | 0.038 |
| Tritanopia (no blue cones) | #00585B | 0.054 |
| Achromatopsia (no color) | #4A4A4A | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B4F71
#0B4F71
oklch(40.6% 0.084 237.5)
- #6B3C13
#6B3C13
oklch(40.6% 0.085 57.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #0B4F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.029
- Light Navy #155084 ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.043
- Twilight Blue #0A437A ΔE 0.043
- Deep Teal #00555A ΔE 0.049
- Charcoal #264653 ΔE 0.052
- Dusk Blue #26538D ΔE 0.052
- Petrol #005F6A ΔE 0.056
Use #0B4F71 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.